Sometimes referred to as winding wire or magnet wire, enameled round wire is copper or aluminum wire with a thin layer of insulation coating, wound into a coil. Magnet wire is a principle component in transformers, inductors, electric motors, and other electrical devices. Sam Dong is a leading global supplier of enameled round wire for electrical appliances, automobiles, power generation and distribution, and more.

Founded in 1977, Sam Dong has provided high-quality service and premium quality multicoated enameled round wire for a variety of applications. We’ve developed a number of special processes critical to various magnet wire applications, such as the production of oxygen-free high conductivity (OFHC) copper wire and rod. To enhance efficiency and deliverability of our products, we operate two facilities in South Korea and three facilities in the United States.

Enameled Round Wire

The insulation or overcoating used on enameled round wire is a type of polymer film (varnish) made from a variety of resins—typically polyester, polyglass, or polyamide—to create a tough, continuous layer of protection for the wire and allow for numerous windings in a coil without producing a short circuit. Various types of varnishes produce different characteristics or properties, such as:

  • High thermal index (AI)
  • Abrasion resistance (NY)
  • Self-bonding (SB)
  • Self-lubricating (SL)

Enameled round wire meets temperature classes between 105 °C and 240 °C, providing a guaranteed service life of 20,000 hours at the rated temperature. Magnet wire comes in a variety of sizes and shapes such as rectangular, square, and round. Enameled wire with a thermoplastic layer to bond the coils together is used to create self-supporting coils, which eliminate the need for a bobbin and accommodate tight spaces in various electronics applications.

Magnetic wire coils convert electrical energy into an electromagnetic field. This facilitates a variety of functions, such as increasing voltage within transformers, producing sound in headphones and speakers, powering electric motors, providing volume control, positioning transducers, and other resistor functions.

Industries & Applications

Because electronics and electromagnetic applications are a critical component in an ever-widening range of industries, high-quality, dependable enameled round wire is in high demand. The production facilities at Sam Dong include an in-line tester for our enamel coatings to ensure continuous, stable quality. In addition to testing, our in-line coating machine includes both drawing and coating functions carried out at the same time, producing higher production efficiency, excellent electric resistance, and reliable wire tension.

Industries that use our enameled round wire products include:

  • Automotive
  • Home appliances
  • Transformers
  • Electrical and electronic devices

High-Quality Enameled Round Wire from Sam Dong

In-line, automated production efficiency and testing allow us to provide high-quality service and premium quality products at competitive prices to our global customers. Sam Dong serves customers in Asia, Europe, North America, South America, and Oceania. Contact us to learn more about the enameled round wire solutions available from Sam Dong.

Product Applications

Automobile IndustryAutomobile Industry
Electric DevicesElectric Devices
Home AppliancesHome Appliances